DVD ; Widescreen.

Canterlot High is hosting a musical showcase and Rainbow Dash, Applejack, Pinkie Pie, Rarity, and Fluttershy are going to be performing with their new band, The Rainbooms. But when a new girl group, The Dazzlings, arrives at CHS, they convince everyone to turn the friendly showcase into a Battle of the Bands. As tensions mount between the competing musical acts, a reformed Sunset Shimmer realizes that the Dazzlings may not be ordinary girls and are after something far more sinister.